Cubecell HTCC-AB02 RX2/TX2 hardware handshake

Hi to all,
I need to connect a Cubecell htcc-ab02 to an esp32 using their internal uarts.
The problem is to syncronize the data flow between them. I’ve seen that for esp32 there Is the possibility to use RTS/CTS pins as hardware handshake.
There Is the same possibility for cubecell devices?
Best regards